Title Page
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Conducted on
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Prepared by
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Location
Overall Health
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Are you medically fit to conduct a CCR dive today
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Are you of sound mind to conduct a CCR dive today
Oxygen
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Oxygen Tank - Check Content
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Oxygen Tank - Check Preassure
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CMF Check - Close O2 valve and count time to drop 10 Bar - should be 10 seconds
Diluant and Bailout
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Dilluent and Bailout Tank(s) - Check Content - O2% and He%
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Diluent & Bailout Tank(s) - Check Preassure
PPO (Monox) Display
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Check Battery Plug
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Turn on Display
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Battery Check
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Check calibration in Air (0.21-0.21-0.21 at sea level)
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If sensors don't align as above - calibrate in Air
Shearwater Computer
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Turn on Shearwater
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Battery Check
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Check calibration in air (0.21-0.21-0.21 at sea level)
Scrubber Canister
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Filling of Canister done correctly
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2 internal canister O-rings control
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Close + Canister Markings
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Canister positive and negative leak tests
Counter Lungs
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Exhale Counter-lung fitting
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Inhale Counter-lung fitting - check no water is present in the lung
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Canister / Counter-lung Connection
Loop
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Mouthpiece & Mushroom Valves Visual Control
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Check Mushroom valves
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Positive and Negative Loop Pressure Test
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Conduct Loop Flow Gas Test
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Loop / Counter-lung connection
Gas Line
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ADV / Exhale Counter-lung Connection
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Tank / First stage connection
Electronics
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Cells housing / inhale counter-lung connection
Positive / Negative Pressure Check
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Positive test (counter-lung position control) 2 min
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Negative test 2 min
Calibration
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Oxygen flush calibration check - if required, calibrate
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PpO2 display calibration
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Shearwater calibration (required when sensors didn't align in air)
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Ensure all monitors agree, otherwise re-calibrate
BCD & ADV Check
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BCD and ADV connection
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BCD and ADV operating control
Pre-Breathe
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Complete 5 minute Pre-Breathe
Diving
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Conduct Pre-Dive Safety Check
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Undertake O2 Flush at 5m - Check Cells
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Open Dill Valve and complete Dill Flush
